<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script>
			var num=0;
			var sum=0;
			
			while(num<=98){
				
				num=num+2;
				sum=sum+num;
			}
			document.write(sum);
		</script>
				
	</body>
</html>
